Friday

August 26, 2016
Total # Posts: 480

**physics**

A 17 kg child descends a slide 3.5 m high and reaches the bottom with a speed of 4.5 m/s. How much work was done by friction as the child goes down the slide?
*January 15, 2014*

**physics**

A 17 kg child descends a slide 3.5 m high and reaches the bottom with a speed of 4.5 m/s. How much work was done by friction as the child goes down the slide?
*January 15, 2014*

**statistic**

Neither! The response variable used to be called the depended variable. It's also plotted along the y-axis!
*January 14, 2014*

**EARTH SCIENCE**

I have taken the exam on penn foster and 125 gallons is not the right answer!
*January 7, 2014*

**Elementary Math**

All I did was 15.4 x .7 which equals 10.78
*January 2, 2014*

**Early Childhood Education**

lol ,dang she told you!
*December 11, 2013*

**Spanish 4**

help with worksheets
*December 10, 2013*

**math**

What number must be added to make a perfect square trinomial x^2+(8/5)x
*December 8, 2013*

**AP Chemistry**

If Q<K then the reaction will flow from reactants to products. If Q>K then the reaction will flow from the products to the reactants. In this case K=.278 and your Q=.226 so Q<K. The reaction will flow from reactants to products.
*November 26, 2013*

**College Algebra**

Pencils cost 20 cents and pens cost 50 cents. Mabel buys x pencils and y pens, spending $2.00. Write an equation in standard form with integer coefficients that relates x and y.
*November 20, 2013*

**College Algebra**

Write an equation for the amount of money, A, that we would have if we invested $25,000 at 6% per year for 5 years compounded instantaneously.
*November 20, 2013*

**College Algebra**

Write an equation for the amount of money, A, that we would have if we invested $2000 at 8% interest for 10 years compounded semiannually (twice each year)
*November 20, 2013*

**College Algebra**

Solve the System 2x-8y=20 3x-12y=30
*November 20, 2013*

**College Algebra**

A 50 gallon barrel plumb full of water springs a leak in the bottom and leaks at a constant rate of two gallons per minute. Write an equation that relates the amount of water left in the barrel, y in terms of how many minutes have passed since the leak began, x.
*November 20, 2013*

**College Algebra**

A company that bought a machine for $30,000 wants to depreciate its entire value equally over the next ten years. Write an equation that represents the machine's value, v, in terms of the number of years that have passed since the machines purchase, t.
*November 20, 2013*

**College Algebra**

Change the equation 5x+3y=60 to slope-intercept form.
*November 20, 2013*

**College Algebra**

Change the equation to slope-intercept form.
*November 20, 2013*

**College Algebra**

Mints cost 5 cents each and gumballs cost 3 cents each. Kathleen spent 60 cents buying x mints and y gumballs. Write an equation in stand form that represents all the different combinations of mints and gumballs that Kathleen might have purchased.
*November 20, 2013*

**algebra**

what is the cube root of -125x^6
*November 10, 2013*

**world history**

what did samuel kemper and the republican army accomplish?
*November 1, 2013*

**Chem 1**

Suppose 1.624g of salt FeSO4 is placed in a 250mL flask to which 50mL of water and 10 mL of 3M H2SO4 are added. How many mL of .1062 M KMnO4 solution are required to reach the endpoint?
*October 21, 2013*

**Chem 1**

What about the mL of water and H2SO4
*October 21, 2013*

**Chem 1**

Suppose 1.624g of salt FeSO4 is placed in a 250mL flask to which 50mL of water and 10 mL of 3M H2SO4 are added. How many mL of .1062 M KMnO4 solution are required to reach the endpoint?
*October 21, 2013*

**Science**

Oooh this helped me on mine.
*October 8, 2013*

**Math**

if kelly gave 1/3 of a pizza to holly and 1/5 to diana, how much did she have left?
*September 30, 2013*

**math**

write a numerical expression to represent the phrase Half a number increased by 34
*September 19, 2013*

**math**

a carload of fraternity brothers leave their house for a long weekend trip. three hours later a second carload of brothers leaves the same house and travels the same path. if the second care drives and average of 15 mph faster than the first, what is the average speed of eavh ...
*September 9, 2013*

**math**

jim has a box in the shape of a rectangular prism. The area of the base of the box is 48 square inches. The volume of the box is 144 cubic inches. Let h = the height of Jim's box. Write and solve an equation you can use to find the height of Jim's box.
*August 29, 2013*

**algebra**

A person invested 20,000$ in stocks and bonds. Her investment in bonds is 5,000$ more than half her investment in stocks. How much did she invest in stocks? how much did she invest in bonds?
*August 29, 2013*

**Early childhood**

Thank you!
*August 25, 2013*

**English**

What is the physical journey like in the novel "Murder on the Orient Express" and how does it add to the meaning?
*August 23, 2013*

**trig**

Find all solutions of the equation. Leave answers in trigonometric form. x^5-1024=0 I got 4(cos tehta + i sin tehta), tehta = 0, 2pi/5, 4pi/5, 6pi/5, 8pi/5 is this right
*July 2, 2013*

**hazard bctcs**

one aspect of the beauty of scenic landscape is its variability. The elevations (feet above sea level) of 12 randomly selected towns in the Finger Lakes Regions of Upstate New York are recorded here. 1117, 1360, 1009, 766, 1333, 1306, 577, 1144, 874, 658, 1306, 712. Find the ...
*May 22, 2013*

**hazard bctcs**

one aspect of the beauty of scenic landscape is its variability. The elevations (feet above sea level) of 12 randomly selected towns in the Finger Lakes Regions of Upstate New York are recorded here. 1117, 1360, 1009, 766, 1333, 1306, 577, 1144, 874, 658, 1306, 712. Find the ...
*May 22, 2013*

**hazard bctcs**

You are responsible for planning the parking needed for a new 256 unit apartment complex, and you're told to base the needs on the statistic "average number of vehicles per household is 1.3" If the owner wants parking that will accommodate 73% of all the tenants ...
*May 22, 2013*

**hazard bctcs**

According to Chebychev's theorem, what percentage of a distribution will be within k = 3.7 standard deviations of the mean? (Give your answer correct to one decimal place.)
*May 22, 2013*

**World Geography**

Honestly you guys really need to chill out!! It's not that big a deal, you don't have to flip out on him!! You could nicely say," Hey I don't think you should be asking for direct answers, but I can give you help". Now idk about you but I don't think ...
*May 10, 2013*

**Chemistry**

So would 248 ml be correct
*May 1, 2013*

**Chemistry**

The volume of a mass of gas is 300 ml at 25°C and 685 torr. What will the gas occupy at STP? Will the temperatures be the same when I do (P1V1/T1) = (P2V2/T2) ?
*May 1, 2013*

**chemistry**

if 500 g of mgcl2 are produced in the above reaction how many l of h2 are produced
*April 30, 2013*

**math**

melinda charges $4 per hour for babysitting. Mrs Garden does not want to spend more than $25 for babysitting. what is the maximum number of hours that she can have melinda babysit. the answer is $24. solve the inequality
*March 11, 2013*

**math**

how munch sand in cubic feet for a sandbox 6 inches high 3 feet wide 3 feet long
*March 4, 2013*

**US History**

thank you
*February 28, 2013*

**US History**

He thinks the first on is It required all Americans to return runaway slaves to their owners, and free states opposed this law then the next one Slavery was increasing in the southern states, but northern states wanted to end slavery hes not sure and i dont want him studying ...
*February 28, 2013*

**US History**

Why was the Fugitive Slave Act so controversial? (3 points) It required all Americans to return runaway slaves to their owners, and free states opposed this law. It required all runaway slaves to be hung, and most people in free and slaveholder states were against this form ...
*February 28, 2013*

**US History**

Use this case study for the following question. Case Study: Rattle Snake Springs National Park Service Rattlesnake Springs was one of the stockade camps where Cherokees were initially collected after being forced off their land. It is located in the far southeastern corner of ...
*February 28, 2013*

**US History**

Sorry, theres another one my son is stuck on.
*February 28, 2013*

**US History**

Thank you
*February 28, 2013*

**US History**

Can somebody help with my son's study guide? Thank you! What did the Supreme Court cases and the ultimate outcome for the Cherokee suggest about future dealings between the United States government and Native Americans? (3 points) The U.S. government would most likely ...
*February 28, 2013*

**chemistry**

567
*February 28, 2013*

**Physics**

276.3
*February 28, 2013*

**math**

well that aint right so..
*February 28, 2013*

**Alagbra 2**

what is .5 cubed?
*February 15, 2013*

**Geometry**

URGENT PLEASE HELP please help me understand how to draw a net, am i supposed to memorize these or is there a method for drawing nets for different shapes.
*February 10, 2013*

**English**

I have to write a 1 paragraph summary on how Alfred the Great defines, and explains irony, and how is Alfred the Great an example of irony
*January 14, 2013*

**English**

Good
*January 8, 2013*

**english**

sentence labeling
*January 2, 2013*

**Interpersonal Communications**

Imagine that you are hosting a group of exchange students next term. You are responsible for welcoming the students to campus and acquainting the students with life on campus socially as well as academically. Develop a “Welcome Letter” for the visiting students. Keep...
*December 18, 2012*

**7th grade science help**

25 genotypes and 25 phenotypes
*December 7, 2012*

**math**

The lenght of each of the two sides of an isisceles triangle is 10 meters. The angle between the two congruent sides is x. find the area of the triangle as a function of x/2.
*December 5, 2012*

**math**

The lenght of each of the two sides of an isisceles triangle is 10 meters. The angle between the two congruent sides is x. find the area of the triangle as a function of x/2.
*December 5, 2012*

**math**

476+ 254=
*December 3, 2012*

**pre-calc help !!!!!!!**

if someone could show me how to solve this problem 1) cos(345°)
*November 28, 2012*

**pre-calc help !!!!!!!**

#1 cos x+sec x=2 #2 (1+tan x)^2= 2 tan x+2 #3 cos^2x-sin^2 x+1=cos x please show all work & thanks
*November 20, 2012*

**pre-calc help !!!!!!!**

cos^2x-sin^2 x+1=cos x
*November 20, 2012*

**pre-calc**

(1+tan x)^2= 2 tan x+2 please show all work
*November 20, 2012*

**pre-calc **

cos x+sec x=2 if you could please show all work
*November 20, 2012*

**chemistry**

the average mass of a kernel of popcorn is 0.15g? what would be the mass of one mole of kernels ?
*November 19, 2012*

**Algebra 2**

I've had a major brain fart..How do you get the inverse function of: f(x)= (2x-3)/(x+1) i know the answer but i don't know how to get there. Please help, thanks.
*November 9, 2012*

**pre-calc help !!!!!!!**

1)tan^2x=3 ? 2)tan x sin^2x=tan x ? 3)2cosx sinx - cos x=0
*November 7, 2012*

**pre-calc**

two observers 3 miles apart and facing each other find that the angles of the elevation of a balloon in the same vertical plane with themselves are 28degree and 31 degree respectively.find the distance from the balloon to the observer located at the 31 angle?
*November 6, 2012*

**pre-calc**

a lifeguard sits on the lifeguard stand that is about eight feet high.he suddenly notices that a swimmer is struggling in the water.the angle between the base of the lifeguard stand and the swimmer is about 102 degree,and the straight line distance between the base of the ...
*November 6, 2012*

**pre-calc**

two lighthouses A and B are positioned along the coast.A ship is positioned 30 miles from lighthouse A and 40 miles from lighthouse B.The angle between the line of sight from the ship to lighthouse A and the line of sight to lighthouse B is 33 degree. what is the distance ...
*November 6, 2012*

**Psychology**

Your body's reaction to the stress you have been under for the past two weeks is that you have become more tired and now have a sore throat. What is this called? Object–relations theory Opponent–process theory Two–factory theory Type B behavior pattern ...
*November 6, 2012*

**Psychology**

What kind of memory is involved in remembering how to tie shoes? Semantic Episodic Procedural Priming Prospective
*November 5, 2012*

**Psychology**

Your body's reaction to the stress you have been under for the past two weeks is that you have become more tired and now have a sore throat. What is this called? Object–relations theory Opponent–process theory Two–factory theory Type B behavior pattern ...
*November 5, 2012*

**Physics**

A ball rolls off a tabletop 0.900 m above the floor and lands on the floor 2.60 m away from a point that is directly under the edge of the table. At what speed did the ball roll off of the table? I would really appreciate it if someone could explain to me how the problem is ...
*October 30, 2012*

**Intermediate Algebra**

8y+20/8 reduced to the lowest term
*October 25, 2012*

**college chemistry**

A sample of helium occupies 1521 mL at 719 mmHg. Assume that the temperature is held constant and determine a) the volume of the helium at mmHg. b)the pressure, in mmHg, if the volume is changed to 315mL
*October 23, 2012*

**physics**

A 1.8 tall basketball player attempts a goal 11 from the basket that is 3.05 high.If he shoots the ball at a 54 ◦ angle, at what initial speed must he throw the basketball so that it goes through the hoop without striking the backboard? The acceleration of gravity is 9....
*October 21, 2012*

**Astronomy**

If M is the mass of one body and m is the mass of another body, and their separation is d, then the gravitational force between them is proportional to
*October 5, 2012*

**Physics **

A projectile is launched at an angle of 64.3 degrees with the horizontal (x axis) at some unknown velocity. After 4 seconds, the object's angle of trajectory is 47.2 degrees above the horizontal. What is the object's vertical displacement at this time in meters?
*October 4, 2012*

**Science**

The ray of refraction would bend away from the normal. That's all I've got, sorry!
*October 2, 2012*

**health**

For adults, which ranges below reflect an accurate BMI category? A. If your BMI is 30 or higher, it falls within the overweight category B. If your BMI is 18.5-24.9, it falls within the normal or healthy weight category C. If your BMI is less than 18.5, it falls within the ...
*September 29, 2012*

**math, solving equation**

x^3 + 4x^2 - 3x - 2 = 0
*September 25, 2012*

**Physical education**

JOIN YOUR SCHOOL'S CROSS COUNTRY TEAM! You'll be running A LOT everyday. I promise you you'll get stronger, healthier, and running will be easy!
*September 24, 2012*

**Math**

ok i don't need help anymore disregard this question
*September 23, 2012*

**Math**

Prove algebraically that the line joining the midpoints of the nonparallel sides of a trapezoid is parallel to the bases of the trapezoid.
*September 23, 2012*

**Biology 9th grade **

Describle the following cellular structures and functions?
*September 19, 2012*

**Health**

i got d
*August 30, 2012*

**health**

It's C. 15-20%
*August 11, 2012*

**Trigonometry**

symbolab(dot com) helps a ton with proving trigonometric identities. its a calculator, but it shows the steps and whatnot.
*August 3, 2012*

**Science**

A certain isotope has a half-life of 12 hrs. How long will it take for 100 ƒÝgr to decay into only 25 ƒÝgr?
*July 15, 2012*

**chemistry**

How many moles of ammonium ions are in 5.393 g of ammonium carbonate?
*May 15, 2012*

**Chemistry**

The element Niobium (Z=41) is a transitional metal. It has two valences 3+ and 5+. Using an orbital filling diagram, predict the order in which electrons will leave their orbitals in order to achieve those valences (i.e. the first ___ electron will come out of the ___ orbital).
*May 15, 2012*

**physics**

An archer puts a 0.26-kg arrow to the bow-string. An average force of 200 N is exerted to draw the string back 1.4 m. (a) Assuming no frictional loss, with what speed does the arrow leave the bow? m/s (b) If the arrow is shot straight up, how high does it rise? m I got 47 for ...
*May 10, 2012*

**physics**

A 15.0-kg test rocket is fired vertically from Cape Canaveral. Its fuel gives it a kinetic energy of 1961 J by the time the rocket motor burns all the fuel. What additional height will the rocket rise? m - how do you organize this? how do the J's fit in?
*May 10, 2012*

**Physics**

A 4.00 103-kg car has a speed of 9 m/s. The car then hits a tree. The tree doesn't move and the car comes to rest. (a) Find the change in kinetic energy of the car. . J (b) Find the amount of work done in pushing in the front of the car. J (c) Find the size of the force ...
*May 10, 2012*

**Physics**

In the 1950s, an experimental train that had a mass of 3.30 104 kg was powered across level track by a jet engine that produced a thrust of 4.90 105 N for a distance of 600 m. (a) Find the work done on the train. J (b) Find the change in kinetic energy. J (c) Find the final ...
*May 10, 2012*